01398-2031 DON 21

01^h 39^m 50.42^s -20° 31' 03.4" P.A. 353.00 sep 2.7 mag 9.60,14.00 Sp F5 dist. 243.9 pc (795.6 l.y.)

Coord 2000	01398-2031	Discov num	DON 21	Comp		Coord arcsec 2000	01 39 50.42 -20 31 03.4
Date first	1929	Date last	2016	Obs	5
Pa first	346	Pa last	353.2	P.A. Now (θ)	353.2°
Sep first	2.0	Sep last	2.734	Sep. Now (ρ)	2.734"
Mag pri	9.60	Mag sec	14.00	delta mag (ΔM)	4.4	Spectral class	F5 (yellow-white)
Pri motion ra	+055	Sec motion ra
Pri motion dec	+000	Sec motion dec
Notes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Constellation	Cetus	SAO	167206	HIP	7754	Tycho2	5857-00109-1
Gaia DR2	5138957339219306368	HD	10246	BD	BD-21 274	Distance	243.9
Distance ly	795.6

WDS 01398-2031 DON 21 : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
Don1937	Ma j	Donner, H.F.	1937MmRAS..65...51R
Don1937		MemRAS 65, 51, 1937
Don1955	Ma -	Donner, H.F.	1955POMic..11....1R
Don1955		Pub. Univ. Michigan Obs. 11, 1, 1955
Don1964	Ma j	Donner, H.F.	1964POMic...9...73R
Don1964		Pub. Univ. Michigan Obs. 9, 73, 1964

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
01398-2031	DON 21		1986	4	357	2.7	9.60	14.00	F5		013950.42-203103.4
01398-2031	DON 21		2016	5	353	2.7	9.60	14.00	F5		013950.42-203103.4

If you need more information about this double, apply for a data request form to the WDS.

WDS 01398-2031 DON 21 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 01398-2031 DON 21 : MEASURES

No records found.

WDS 01398-2031 : VIRTUAL EYEPIECE

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WDS 01398-2031 : ALADIN DSS IMAGE @ 01^h 39^m 50.42^s -20° 31' 03.4"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 01398-2031 DON 21 : NEIGHBORHOODS

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Pass over with the mouse cursor to display the catalog designation.

Show	name	coord_2000	discov#	comp	pa	sep	dist(')
Show		01398-2031	DON 21		353	2.7
Show		01408-2022	RST2265		101	0.2	17
Show		01410-2051	SKF1381		256	3.6	26
Show		01425-2015	RST2266		324	2.5	42
Show		01406-2125	LDS3298		331	25.5	55
Show		01434-2100	UC 612		212	27.0	58
Show		01357-2026	UC 590		150	15.2	60
Show		01432-2113	BRT 296		92	4.2	63
Show		01387-2131	SKF1380		122	3.0	63
Show		01355-2102	SKF1378		219	8.3	69
Show		01448-2009	HU 1211		111	3.4	73
Show		01412-2143	SEE 15		313	3.1	75
Show		01353-2112	LSC 14		306	0.2	76
Show		01451-2003	HJ 3459		89	19.7	80
Show		01432-2137	CVN 70	BC	240	0.4	82
Show		01432-2137	HJ 3456	AB	353	15.0	82
Show		01344-2108	HJ 2058		96	8.9	85
Show		01460-2056	UC 624		84	5.6	90
Show		01470-2045	HJ 2086	AB	106	11.3	103
Show		01470-2045	HJ 2086	AC	181	23.1	103
Show		01331-1951	LDS1103		23	117.3	104
Show		01388-1849	SLW 76		56	13.0	104
Show		01431-1852	UC 608		22	12.3	110
Show		01432-1853	ARA 520		109	8.0	110
Show		01387-1842	SLW 75		14	152.6	110
Show		01330-2128	SKF 120		21	1.0	111
Show		01373-1843	WIS 40		173	670.2	114
Show		01454-2159	HDS 233		302	0.2	118
Show		01471-1928	NSN 245		224	3.1	121
Show		01473-2131	ARA1611		226	13.2	121
Show		01400-1830	GWP 211		214	85.5	122
Show		01331-2149	KPP2861		271	2.1	123
Show		01327-1922	SKF 332		176	1.2	123
Show		01396-1825	UC 598		348	15.1	127
Show		01489-2053	ARA1256		296	8.8	130
Show		01377-1822	CVR1075		204	4.6	134
Show		01352-1829	RSS 49		2	8.4	139
Show		01358-2239	LDS2214		14	2.7	139
Show		01308-2138	ARA1609		304	7.2	144
Show		01410-1808	LDS1112		216	12.5	145
Show		01421-1808	SMW 1		354	0.4	148
Show		01363-2249	ARA1964	AB	174	12.8	148
Show		01316-1901	HJ 2052		114	80.8	148
Show		01363-2249	ARA1964	BC	263	10.0	148
Show		01303-2140	SLW 68		303	33.9	150
Show		01505-2042	ARA1257		89	1.1	151
Show		01455-1822	TDS1992		43	1.3	153
Show		01392-1759	UC 597		130	9.4	153
Show		01415-1759	HJ 2072		289	3.3	154
Show		01388-1758	LDS 838		333	1.7	155
Show		01487-1900	ARA 521		95	5.9	155

WDS 01398-2031 : COMPONENTS

	A
B	pa=353.6° sep=2.73"

01398-2031 A

Componente originario normalizzato	AB	Coord arcsec 2000	013950.42-203103.4	Mag	9.6	Spectral class	F5 (yellow-white)
PmRA	55.00	PmDE	0.0	SAO	167206	HIP	7754
Tycho2	5857-00109-1	HD	10246	BD	BD-21 274

Tycho2

Tycho2	5857-00109-1	Pflag		RAmdeg	24.96021764	DEmdeg	-20.51762857
PmRA	50.3	PmDE	-9.0	E RAmdeg	12	E DEmdeg	15
E pmRA	1.4	E pmDE	1.4	EpRAm	1989.29	EpDEm	1988.00
Num	8	Q RAmdeg	0.9	Q DEmdeg	1.3	Q pmRA	0.9
Q pmDE	1.3	BTmag	9.976	E BTmag	0.026	VTmag	9.520
E VTmag	0.023	Prox	999	TYC	T	HIP	7754
CCDM		RAdeg	24.96009222	DEdeg	-20.51760667	EpRA 1990	1.64
EpDE 1990	1.43	E RAdeg	13.2	E DEdeg	15.8	Posflg
Corr	-0.1

SAO

SAO	167206	DelFlag		RA1950		PmRA1950	0.0036
DE1950		PmDE1950	-0.003	Vmag	8.8	SpType	F5
Double code		Source	23	CatNum	444	DM	BD-21 274
DMcomp		BDsup		HD	10246	M HD	0
GC		RA1950rad	0.42520624	DE1950rad	-0.36251514	PmRA2000	0.0038
PmDE2000	-0.007

Hipparcos

Catalog	H	HIP	7754	Proxy		RAhms	01 39 50.42
DEdms	-20 31 03.4	Vmag	9.48	VarFlag		R Vmag	H
RAdeg	24.9601	DEdeg	-20.5176	AstroRef		Plx	6.33
CCDM	01398-2031	N CCDM	I	Nsys	1	Ncomp	1
MultFlag		Source		Qual	S	M HIP
Theta		Rho		HD	10246	BD	BD-21 274
CD		CP		Dm number	-21 274	VIred	1.99
SpType	F2/F3V	R SpType		Coord arcsec 2000	013950.42-203103.4

Hipparcos 2

HIP	7754	Sn	5	So	0	Nc	1
RArad	0.4356357651	DErad	-0.3580998466	Plx	4.1	PmRA	47.75
PmDE	-8.81	E RArad	1.22	E DErad	1	E Plx	1.42
E pmRA	1.53	E pmDE	1.1	Hpmag	9.5652	E Hpmag	0.0078
SHp	0.045	VA	0	BV	0.395	E BV	0.035
VI	0.46

CCDM

Ccdm	01398-2031	RComp		Comp	A	Note1
Note2		Discov num		DRAs	2.45	DDEs	-3.4
R dRAs	10	Year		Theta		Rho
Obs	2	Vmag	9.0	Sp	F5	PmNote	*
PmRA	50	PmDE	-3	Dm number	-21 274	Cat1	BD
Name2	167206	Cat2	SAO	HD	10246	M HD
ADS BDS		M ADS BDS		N IDS		IDS	01351S2101A
HIC	7754

01398-2031 B

Componente originario normalizzato	AB		Coord arcsec 2000	013950.40-203100.7		Mag	14		Calc delta mag	4.4
Calc coord	yes

CCDM

Ccdm	01398-2031	RComp		Comp	B	Note1
Note2		Discov num	DON 21	DRAs		DDEs
R dRAs		Year	1929	Theta	348	Rho	2.0
Obs	3	Vmag	14.8	Sp		PmNote
PmRA		PmDE		Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS		M ADS BDS		N IDS		IDS	01351S2101B
HIC	7754